TRAXXAS TRX4 Trail Pinion 10T Steel TRX4010T by GPM  [TRX4010T]

Steel 10T pinion tailored for TRX4

This pair of steel 10T pinions is made for TRAXXAS TRX4 TRAIL CRAWLER duty, listed as model TRX4010T. Constructed from hardened steel #45, these gears are set for motors using a 3.175mm centre bore and a 0.8mm tooth pitch to ensure reliable meshing when crawling at low speed under load.

Compatibility notes: the pinions are sized to engage 32 pitch spur gears with a 10-tooth pinion, so double-check your spur and shaft specs before swapping. The kit comes with the small 3x3 screw shaft to clamp the pinion onto many TRX4 motor shafts for straightforward installation.

Performance tips: changing pinion tooth count modifies final drive ratio, which influences low-end torque and trail pace. A lower tooth count on the pinion boosts wheel torque for technical sections; always adjust mesh and confirm motor clearance to protect components.

Care and installation: remove any burrs from the motor shaft, verify the 3.175mm bore fit, and tighten the fixing screw carefully to avoid damaging the shaft or teeth. Check mesh and the mounting screw after the first few runs and during routine maintenance.